Pakistan also alleges the attacks are being carried out at the behest of the TTP's Afghanistan-based leadership and handlers, who are being supported by the Taliban government.
SelectWhat's included
，这一点在同城约会中也有详细论述
Why is this a problem?
思路：单调递减栈，找「上一个比当前价格大的元素索引」。正序遍历，弹出所有 ≤ 当前价格的索引；跨度 = 当前索引 - 栈顶索引（栈空则为 当前索引 + 1）。